Discussion on: Turn any Bash function/alias into a hybrid executable/source-able script.

[Felix Franz]

If you like the scripts in this post, then I can only imagine what this is gonna do to you:

$ alias ls="ls --group-directories-first --time-style=full-iso -l -A -g -G"
$ ls --reverse -t -c
drwxr-xr-x 15   480 2022-03-07 18:02:46.137044599 +0100 puppet
drwxr-xr-x 47  1504 2022-03-20 18:46:38.562413488 +0100 puppetlabs-motd
drwxr-xr-x 23   736 2022-03-26 19:20:07.091106952 +0100 _ansible
drwxr-xr-x  4   128 2022-03-30 12:14:26.936141669 +0200 puppet5
drwxr-xr-x 10   320 2022-04-08 22:40:52.012258343 +0200 _tmp
-rw-r--r--  1  8196 2022-03-09 04:10:13.278738177 +0100 .DS_Store
-rw-r--r--  1 49022 2022-03-16 13:37:21.047662608 +0100 BrokerKeys.kdbx

$ ls --reverse -t | grep '^d' | tail -n 1
drwxr-xr-x 10   320 2022-04-08 22:40:52.012258343 +0200 _tmp

Well, I think you get the idea.
For your function loading woes, try zsh and put something like these lines in your ~/.zshrc file.

pmodload 'helper'

# autoload functions
ZSH_FUNC_DIR="${0:h}/.zsh/functions"
if [[ -z ${fpath[(r)$ZSH_FUNC_DIR]} ]]; then
  fpath+=( "$ZSH_FUNC_DIR" )
  autoload -U "$ZSH_FUNC_DIR"/*(.:t)
fi

In that folder, just put a file named as the desired function and as content put the function body and let zsh do it's magic.

# filename: dbg
# Activate shell debug mode for next command.
set -o xtrace; eval "$@"; rc=$?; set +o xtrace
return $rc

The function or however many you put there, will be lazy-loaded on first execution. For that, I just converted most of my aliases into functions and never looked back.

$ which dbg
dbg () {
    local -a fpath
    fpath=("/Users/www-data/.zsh/functions")
    builtin autoload -X -U
}

$ dbg "echo oh yes" # output omitted
$ which dbg
dbg () {
    set -o xtrace
    eval "$@"
    rc=$?
    set +o xtrace
    return $rc
}

An approach more similar to yours for sourcing the files is to use shell globbing instead of find. With the right shopt settings this one-liner in ~/.zshrc or ~/.bashrc should do the trick.

for file in .zsh/{functions,aliases}/*.zsh; do
  source "$(realpath "$file")"
done

I strongly recommend you to try zsh + prezto, you just gonna love the tab completion!

Put that in your .zpreztorcas a starting point and play around with ssh and scp.

zstyle ':filter-select:highlight' matched fg=yellow,bold
zstyle ':filter-select' max-lines 18 # restrict lines for filter-select
zstyle ':filter-select' rotate-list yes # enable rotation for filter-select
zstyle ':filter-select' case-insensitive yes # enable case-insensitive search
zstyle ':filter-select' extended-search yes # see below
zstyle ':filter-select' hist-find-no-dups yes # ignore duplicates in history source
zstyle ':filter-select' escape-descriptions no # display literal newlines, not \n, etc
zstyle ':completion:*' menu select
zstyle ':completion:*' accept-exact '*(N)'
zstyle ':completion::complete:*' cache-path "${XDG_CACHE_HOME:-$HOME/.cache}/zinit/zcompcache"
# Set the entries to ignore in static */etc/hosts* for host completion.
zstyle ':prezto:module:completion:*:hosts' etc-host-ignores \
  '0.0.0.0' '127.0.0.1'